Mounting device for spools in winding machines



May 22, 1934. E, zxNDEL MOUNTING DEVICE FOR sPooLs IN wINDING MACHINES Filed Nov. 2l, 1932 Patented May 22, 1934 UNITED STATES MOUNTING DEVICE FOR SPOOLS I WINDING MACHINES Ernst Zindel, Erlenbach, Switzerland, assignor to the firm Schrer-Nussbaumer & Co., Erlenbach,

Switzerland Application November 21,1932, Serial No. 643,707 In Switzerland December 7, 1931 8 Claims.` (Cl. 242-18) This' invention relates to mountingdevices for spools to be wound with strand materials, such as thread, yarn and the like, in winding machines comprising a winding shaft, which is disconnectable from the drive and a holder adapted :for receiving one end of the'spool and provided with a displaceable thrust influenced bearing for the spool the thrust being so regulatable by means of a movable auxiliary member that the spool vwith l0 the spool spindle disconnected fromits drive is released to be freely rotatable for unwinding the material, whereupon for joining the thread ends the spool is adapted Yto be stopped in the mounting device, i. e. secured against rotation, by removing the said thrust from the bearing of the spool with the Winding shaft stopped.

This construction for the mounting device permits of conveniently p'iecing up the thread ends, when thread breakage occurs during the winding operation. I

With this arrangement normally means rare combined for directly urging the spool bearing backwardly so as to provide a range of movement for the same which permits the insertion and the removal of the spool.`

The drawing serves' for explaining one constructional exemplication of the invention, in which Fig. 1 shows a sectional elevation of a winding machine according to the invention;

Fig. .2 shows a longitudinal section o f a h older according to the invention ona larger scale;

Figs. 3 and 4 are similar longitudinal sections as Fig. 2,'but with the holder in diierent positions of its parts.

Referring to Fig. 1 ofthe drawing, 1 denotes a .gear box in which the drive shaft "2 of the machine is longitudinally .displaceable in limited manner and which in this case isl identical 'with the spool spindle. The drive shaft 2 is provided at one of its ends with a friction wheel 3 for cooperation with a driving friction wheel 4 and at its other end with a head piece '5 to which a holder 6 is opposed. 'The head 'piece 5 and the holder 6 serveior thereception of the spool "7 to be wound with material. The holder 6 is arranged on a hollow carrierb'ar .9, 'by means of a support 8, the carrier vbar being secured 'to the ,gear box 1 and serves vas -a lguide sleeve for a displaceable rod 1'0. The rod 1'0.is coupled at 'its 55 4. When the spool spindle V2 is connected, 'the rod 10 is secured in its respective position by a locking device (not shown). The spool spindle 2 gears by means of gear teeth 12 with a lifter disc 13 which imparts movement to the thread carrier of the device (not shown) reciprocating alongside of the spool.

The support 8vfor the holder is adjusted into position on the carrier bar 9 by a set screw 14 so as to be readjustable along the bar accordingly to the length of the spool to be wound with material. In support 8, coaxially with the spool spindle 2, a spindle 15 is mounted. The spindle 15 carries at one of its ends the spool holder 6 which is in the form of a sleeve and in which a displaceable bushing 16, a ball bearing 17, a displaceable bearing 18 forl the spool 7, and a coil spring 19 are arranged. The ball bearing 17 is intercalated between the bushing 16 and the spool bearing 18 which by these means is adapted to rotate in unrestricted manner. A spring 19 urges thefball bearing 17 against a shoulder formed on the bearing 18, thus pressing the parts 17, 16 and 18 in the Vdirection towards the spool 7 which consequently is rmly heldin the bearing 18 and through the influence of this spring also pressed in the head piece 5 of the spool spindle 2, whereby the other end of the spool iirmly engages the spool spindle 2. 1

A split ring 20 arranged in a groove inside the sleeve 6 is adapted for limiting the endwise movement of the bushing 16 and thus also that of the bear-ing 17, in thel sleeve 6. On turning the spool spindle 2, the spool 7 is turned in unison therewith thus Winding the thread arriving from a `reel or a supply bobbin .on the spool 7.

When vfor any reason thread breakage occurs, subsequently to the disconnection of the .spool spindle `2 from the .driving wheel 4 for piecing `up the separatedr thread ends, the bushing 16 is .pressed inwardly in the sleeve 6 against the 9, action of the spring .-19 by `means vof its flange 16 for hand control which is disposed .exteriorly of .the sleeve 6, until the iiange 16 rests against therespective front ,end of sleeve 6, as shown in 2. `The ball lbearing 17 takes part in this Imovement through .its vconnection vwith vthe bushing 16, thereby correspondingly reducing the pressure exertion yof :the spring 19, V-which is thus compressed, on the bearing 18. In consequence thereof, the spool 'Tris released so as to vbe adapted .tofreely turn in its bearing 18 and in the head piece 5. Thereupon, -by turning Athe .spool 7, the broken .thread is unwound from .the .spool for such a length, as to enable conveniently tying it together by hand with the other broken end of 11,0

sol

the thread. For effecting the knot, the bushing 16 is released which has the effect that the bearing 18 is again pressed against the spool 7 by spring 19 the same as previously, thus holding the spool so fast in the head piece 5 and the holder 6 that turning it by pulling the thread is rendered impossible. After the uniting of the thread ends the spool spindle 2 is again connected with the drive, whereupon the winding opera-v tion is continued.

For doiing and donning the spools the spool bearing 18 is moved backwardly to the requisite extent against the action. of the spring 19 by means of the spool proper, as shown in Fig. 3; This is readily performable since the bearing 18 is adapted to effect a substantially greater movement than the bushing 15. l shows the holder with its parts in a position, when no spool is inserted in the device.

The axially displaceable bearing 18 is provided with a thickened portion in which a removable insert 18 i-s accommodated whichhas a conical seat for receiving and centering the spool. The head piece 5 of the spool spindle 2 for engaging the other end of the spool is provided with a similar removable insert. This construction permits of always employing inserts at both mounting positions for the spool the seats of which are adapted to the diameter of the spools to be used.

For the case that the spool spindle 2 is provided with a needle projecting into the spool to be mounted and serving in a known manner, with its length and arrangement correspondingly designed, for passing the thread on removing the spool through the axial bore thereof after drawing it endwise off the spool, special means are arranged for providing the thus longer path of movement required for donning and dofng the spools. For this purpose the spindle 15 actually carrying the spool holder 6 may be chsplaceably arranged in the support 8. The spindle 15 is secured in its position of adjustment in the support 8 by a stop ball 22 engaging in a circum- 3 ferential groove 15 of the spindle 15 and loaded by a spring 21 (Fig. 2). rWith the spindle l5 locked in this manner the holder isin its normal position in which the spool is held in mounted position by the bearing 18. l

-When it is desired' to remove the-spool after the winding operation is nished, the spindle-15 is so far retracted against the action of the spring loaded stop ball 22 by pulling the Yeasily accessible hand button 23 on the spindle in the direction, indicated by the arrow in Fig. 2,- until an adjusting ring 24, arranged on the spindle'l, abuts against the support 8; Thereby the holder 6, while releasing the spool, is moved such a distance away from the head piece 5 of the spool spindle 2 that the spool is adapted to be readily slid over the previously mentioned needle', eventually by bending the same, -for removing 'the spool from the machine. After the fresh spool to be wound with material has been slid over the needle and inserted in the head piece 5, the spindle l5 is pushed back into its initial position of adjustment in which it is again automatically secured by the stop ball 22. The spool isthen in mounted position as previouslyl explained. When it is wanted to primarilyrelease the spool jon thread breakage occurring, this is effected as previously described by pushing the displaceable bushing 16 backwardly. i Axial displacement of the spindle 15 for the length of its predetermined path of movement may be carried out in any suitable manner, for example by means of a spring pressed lever not shown. Instead of displacing the spindle, the holder may be arranged to be displaced as a whole, that'is inclusive of all its parts, on the carrier bar for the same.

The inserts provided at both mounting positions lor the spool, one of which at least is exchangeably arranged, may consist of a yielding materialhaving a high coefficient of friction,

such as rubber.

' I do not limit myself to the particular size, shape, number or arrangement of parts as shown and described, 'all of which may be varied without going beyond the scope of my invention as shown, described andclaimed. What I claim is:

' l. n a spool mounting for thread winding machines, in combination, a spool spindle adapted to operatively engage the spool for actuating the same, a disconnectable drive for said spool spindle, a counter holder forthespool, an exterior sleeve of said holder, an inner shoulder of said sleeve at the end thereof remote from said spool spindle, a' bushing displaceably arranged in said sleeve Vand projecting]therefrom towards said spool spindle, amounting for the spool displaceably arranged in said bushing, a spring intercalated between said mounting and said inner shoulder of said sleeve and tending to urge said mounting in the' direction towardssaid spool spindle, means forregulating the thrust exerted on said displaceable mounting by said spring and adapted to release the spool to be freely rotatablebetween said spool spindlel and said mounting, and control means adapted for disconnecting said drive on thread breakage for unwinding the thread from the released spool for piecin'g up the thread ends with the spool locked with the stoppedspool spindle and the counter holder .by action of said thrust influencing said mounting.

'2. Inv a spool Amounting for thread winding ma'- chines, in combination, aspool'spindle adapted to operatively engage the spool for actuating the same, adisconnectable drive for said'spool spindle, a counter holder for the spool, an exterior sleeve of saidholder, an inner shoulder of said sleeve at the end thereof remote from said spool spindle, a bushing displaceably arranged'in said sleeve and projecting therefrom towards said spool spindle, an antifriction bearing displaceably arranged in said bushing, a mounting member for the spool rotatably carried in said,v antifriction bearing to be free to .turn therein, a spring intercalated between said antiiricton bearing and said inner shoulder of said sleeve and tending to urge said bearing 'in the direction towards said spool spindle, means for regulating the thrust exerted on said displaceable antifriction bearing by said spring, and adapted to release the spool to be freely rotatable between said spool spindle and said mounting member, .and control means adapted for disconnecting` said drive.

3. In a spool mounting for thread windingmachines, in combination, a spool spindle adapted to operatively engage the spool for actuating the same, a disconnectable drive for said spool spindle, a counter holder for the spool, a carrier spindle for said'holder, a supporting member forsaid carrier spindle, an automatic clamping device intercalated between said carrier spindle and said `supporting member therefor -for securing ysaid carrier spindle on said'suppoiting member in'a ilo position wherein the spool is mounted between said spool spindle and said holder, a thrust influenced mounting for the spool displaceably arranged in said counter holder, means for regulating said thrust exertion on said displaceable mounting and adapted to release the spool to be freely rotatable between said spool spindle and said mounting, and control means adapted for disconnecting said drive on thread breakage for unwinding the thread from the released spool for piecing up the thread ends with the spool locked with the stopped spool spindle and the counter holder by action of said thrust influencing said mounting.

4. In a spool mounting for thread winding machines, in combination, a spool spindle adapted to operatively engage the spool for actuating the same, a disconnectable drive for said spool spindle, a counter holder for the spool, a carrier spindle for said holder, a supporting member for said carrier spindle, an automatic clamping device intercalated between said carrier spindle and said supporting member therefor for securing said carrier spindle on said supporting member in a position wherein the spool is mounted between said spool spindle and said holder, a supporting rail for said supporting member extending longitudinally of the device for displacing said holder as a whole with respect to said spool spindle, a thrust inuenced mounting for the spool displaceably arranged in said counter holder, means for regulating said thrust exertion on said displaceable mounting and adapted to release, the spool to be freely rotatable between said spool spindle and said mounting, and control means adapted for disconnecting said drive on thread breakage for unwinding the thread from the released spool for piecing up the thread ends with the spool locked with the stopped spool spindle and the counter holder by action of said thrust influencing said mounting. f

5. In a spool mounting for thread winding machines, in combination, a spool spindle, a gripping head on said spool spindle for the spool, an insert in said gripping head for one end of the spool to bear against and consisting of a yielding material having a high coeflicient of friction, a disconnectable drive for said spool spindle, a counter holder for the spool, an exterior sleeve of said holder, an inner shoulder of said sleeve at the end thereof remote from said spool spindle, a bushing displaceably arranged in said sleeve and projecting therefrom towards said spool spindle, an antifriction bearing displaceably arranged in said bushing, a mounting member for the spool rotatably carried in said antifriction bearing to be free to turn therein, an insert in said mounting member for the other end of the spool to bear against and consisting of a yielding material having a high coefficient of friction, a spring intercalated between said antifriction bearing and said inner shoulder of said sleeve and tending to urge said bearing in the direction towards said spool spindle, means for regulating the thrust exerted on said displaceable antifriction bearing by said spring and adapted to release the spool to be freely rotatable between said spool spindle and said mounting member, and control means adapted for disconnecting said drive.

6. In a spool mounting for thread winding machines, in combination, a spool spindle adapted to operatively engage the spool for actuating the same, a disconnectable drive for said spool spindle, a counter holder for the spool, a carrier spindle for said holder, a supporting member for said carrier spindle, an automatic clamping device intercalated between said carrier spindle and said supporting member therefor for securing said carrier spindle on said supporting member in a position wherein the spool is mounted between said spool spindle and said holder, a supporting rail for said supporting member extending longitudinally of the device for displacing said holder as a whole with respect to said spool spindle, an exterior sleeve of said holder, an inner shoulder of said sleeve at the end thereof remote from said spool spindle, a bushing displaceably arranged in said sleeve and projecting therefrom towards said spool spindle, an antifriction bearing displaceably arranged in said bushing, a mounting member for the spool rotatably carried in said antifricton bearing to be free to turn therein, a spring intercalated between said antifriction bearing and said inner shoulder of said sleeve and tending to urge said bearing in the direction towards said spool spindle, means for regulating the thrust exerted on said displaceable antifriction bearing by said spring, and adapted to release the spool to be freely rotatable between said spool spindle and said 110 mounting member, and control means adapted for disconnecting said drive.

7. In a spool mounting for thread winding machines, a spool driving shaft having a head, a counter support, means for operatively connect- 115 ing a spool between said head and said support including a spring-pressed mounting for said spool displaceably arranged in said counter support, means for limiting the stroke of said displaceable mounting, means for displacing said 120 mounting to a limited extent to release said spool to freely rotate between the shaft head and the said mounting, said mounting being further displaceable to make possible the insertion and removal of said spools.

8. In a spool mounting for thread winding machines, a spool spindle, a counter SuDDOrt in axial alignment with said spool spindle, means for operatively connecting a spool between said spindle and said support and including a spring- 130 pressed bushing in said support, a mounting for said spool shaft in said bushing, means for limiting the stroke of said bushing, said displaceable bushing adapted to release said spool for free rotation between the spool spindle and 135 said mounting, and means for holding the counter support in winding position, said means being yieldable to permit the counter support to be moved to a position releasing the spool.

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14o ERNST ZINDEL. 

